Unit converter is a calculator tool that converts measurements across more than 200 units. It covers length, weight, temperature, speed, area, volume, digital storage, pressure, energy, and time, with exact SI-defined conversion factors. The tool runs in your browser.
Frequently asked questions
- What unit categories does the tool support?
- The tool covers length, weight, temperature, speed, area, volume, digital storage, pressure, energy, and time, over 200 individual units.
- Is my data sent to a server?
- All conversions are pure JavaScript calculations in your browser. No data is sent to our servers.
- How precise are the conversions?
- Conversions use the exact SI-defined conversion factors. Results are displayed to up to 10 significant figures.
- Can I convert temperatures?
- Yes. Temperature conversions use the correct offset formulas. Not just multiplication, so Celsius to Fahrenheit results are always accurate.
Reviewed and tested May 25, 2026.